Oahu Weather Forecast for August 20, 2026

Oahu Weather Forecast for August 20, 2026

Increased shower activity is expected through Friday as trade winds weaken. We're continuing to monitor Tropical Depression Two-C which could strengthen...

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Oahu Surf Forecast for August 20, 2026
Oahu Surf Forecast for August 20, 2026

Surf along south facing shores will remain slightly below average through Thursday. A long period south-southwest swell generated from gales just south and east...

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Oahu News:

Hurricane Lala brought 1.3 trillion gallons of water to Hawaii, nearly two million Olympic-sized pools worth, dramatically impacting the islands. Following the storm, HECO restored power to all Oahu and Maui customers, though 13,000 remain without service on the Big Island. In environmental news, NOAA confirmed the death of another Hawaiian monk seal on Oahu, raising concerns about local wildlife. Public safety saw a boost as HPD shut down a suspected drug house on Keeaumoku Street, disrupting illicit activities. City officials also closed a stretch of 11th Avenue in Kaimuki due to a compromised wall at a local restaurant, prioritizing public safety. Lastly, political developments continue as a joint hearing is scheduled for two Honolulu City Council election challenges, underscoring ongoing electoral scrutiny.

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Tropical Depression forecast to become a tropical storm today

Tropical Depression Two-C is forecast to become a tropical storm later today. The system is still expected to track south of Hawaiʻi late Saturday into Monday. Even with the southward track increased winds and rain are expected, with the highest rainfall totals expected across windward and southeast Big Island. Rainfall totals of 1 to 2 inches with maximum amounts of 4 inches are expected on eastern Maui.

Recovery efforts continue at Nāʻālehu Elementary and Kaʻū High & Pāhala Elementary

The Hawaiʻi State Department of Education continues recovery and planning efforts for Nāʻālehu Elementary School and Kaʻū High & Pāhala Elementary School following significant impacts from Hurricane Lala.

Summit District of Haleakalā National Park remains closed, Kīpahulu District reopens after Lala 

The Summit District of Haleakalā National Park remains closed through the weekend for storm recovery, including road clearing and facility restoration. Meanwhile, the Kīpahulu District is open to the public. Kīpahulu Campground will reopen Friday, Aug. 21.

UH: Hurricane Lala douses Hawaiʻi with 1.9M Olympic-size pools of water

Lalaʻs impacts brought average statewide rainfall of 11.4 inches. Hawaiʻi County received 66% of the total rainfall volume—equivalent to 1.2 million pools (833 million gallons).

Maui Surf Forecast for August 21, 2026

Surf along south facing shores will remain slightly below average through at least Friday morning, with near average heights possible by Saturday as a...

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‘All of our loved ones are scattered all over the place’

Families search for loved ones whose final resting places at 2 Big Island cemeteries were desecrated by raging floodwaters of Hurricane Lala, unearthing graves, toppling headstones and washing away caskets.

Volcano Watch: A thank you letter to Hawaiian Volcano Observatory field technicians

Next time you listen to a scientist provide updates about ongoing volcanic activity, see a map showing locations of earthquakes or check the livestream cameras at Kīlauea summit for lava, take a moment to appreciate the team that works every day to keep the data flowing.

Impending tropical cyclone forecast still shows heavy rainfall, possible wind for parts of islands

Heavy rainfall will begin to impact the Big Island late Saturday night, spreading westward across the remainder of the islands Sunday into Monday.

Kauai Weather Forecast for August 21, 2026

Trades remain weak through Friday as a trough advances north of the islands. Tropical Depression 2C has formed southeast of Hawaii and is forecast to track...

Kauai Surf Forecast for August 21, 2026

Surf along south facing shores will remain slightly below average through at least Friday morning, with near average heights possible by Saturday as a...

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Tropical Depression Two-C forecast to upgrade to tropical storm today as moves closer to Big Island

The National Weather Service has issued a flood watch, with possible flash flooding caused by excessive rainfall, for windward and southeast Big Island from late Saturday night through Monday afternoon.

Hurricane/Tropical Storm Lala drowns Hawaiʻi in 1.9M Olympic-size swimming pools of water

Researchers at Hawaiʻi Mesonet and Hawaiʻi Climate Data Portal captured massive 1.3-trillion-gallon scale of the tropical cyclone on the Hawaiian Islands; 833 million gallons of water fell on Big Island alone.

Hawaiʻi Volcanoes National Park to close ahead of approaching new tropical cyclone

Entire park will be temporarily shuttered as of 5 p.m. today; could still be closed during next lava fountaining episode of ongoing episodic summit eruption at Kīlauea volcano.

Hawai‘i County monitoring new tropical cyclone approaching state

Officials urge residents and businesses to prepare for heavy, flooding rainfall, high surf, possible damaging winds and the potential for worsening of power outages, loss of communications and road closures.

What you need to know about Hurricane Lala recovery: Nā‘ālehu Elementary, Ka‘ū High & Pāhala Elementary remain closed

The state Education Department hopes to have plans finalized and shared by early next week for how to return to educational programming at both schools. Meanwhile, Hawaiian Electric expects nearly all impacted Big Island customers, except those in certain remote and severely damaged areas, to have their power back on by today.